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Ultraviolet TV could provide a better understanding of animals’ vision

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Unlike us, many animals can see ultraviolet light. If you’re using a video screen to study their visual perception, therefore, that screen really ought to work in the UV spectrum – and a new one does exactly that.

Known as the UV-TV, the prototype device was developed by a team at Australia’s University of Queensland. And while a regular video screen produces colors based on a mixture of red, green and blue, the UV-TV throws violet and ultraviolet into the mix. Each pixel is made up of five LEDs, one in each color.

That said, its resolution is quite low – just 8 by 12 pixels within a 4 by 5-cm (1.6 by 2-in) screen. According to the scientists, though, that’s sufficient for analyzing how perception of UV light helps various animals to understand the world around them.

The UV-TV's 4 by 5-cm screen has a resolution of 8 by 12 pixels
The UV-TV’s 4 by 5-cm screen has a resolution of 8 by 12 pixels

University of Queensland

“We’ve recently started studying the vision of anemonefish or clownfish – aka, Nemo – which, unlike humans, have UV-sensitive vision,” says Dr. Karen Cheney. “Our research is already showing that the white stripes on anemonefish also reflect UV, so we think UV colour signals may be used to recognize each other and may be involved in signalling dominance within their social group. Who knows what other discoveries we can now make about how certain animals behave, interact and think.”

The technology is described in a paper that was recently published in the journal Methods in Ecology and Evolution.

Source: University of Queensland via EurekAlert

Source: https://newatlas.com/science/ultraviolet-tv-animals-vision/

NEWATLAS

Hidden Egyptian handbook reveals secrets of mummification

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A recently discovered text written around 1450 BCE contains previously unknown details about Egyptian mummification process

A 3,500-year-old Egyptian medical text is shedding new light on the ancient practice of mummification. Recently discovered inside a much larger work, the papyrus document being studied by University of Copenhagen Egyptologist Sofie Schiødt is the oldest known mummification manual.

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Category: Science

Tags: University of Copenhagen, Mummies, Archaeology

Source: https://newatlas.com/science/egypt-mummification-manual-louvre-carlsberg-copenhagen/

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Lasers and plasma shockwaves used to measure ripeness of fruit

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Researchers in Japan have developed a contactless way to measure the ripeness of soft fruit like mangoes

Judging how ripe a piece of fruit is can be a frustrating process for everyone from farmers to shoppers. Now, researchers at Shibaura Institute of Technology (SIT) in Japan have developed a new high-tech way to check, without touching or damaging soft fruit like mangoes. All it takes is a laser and some plasma shockwaves.

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Category: Science

Tags: Food, Fruit, Laser, Food technology

Source: https://newatlas.com/science/fruit-ripe-lasers-plasma-shockwaves/

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NEWATLAS

Broadcasting tech swaps stadium ads for regional advertising

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Examples of the system showing two different ads (A,B) along with the magenta screen (C) which neither stadium audiences nor TV viewers see

When viewing sports coverage from other countries, it’s common to see sideline advertising boards that are promoting products you’ve never even heard of. This new TV system is capable of digitally replacing the content of those boards, so they’re advertising region-specific products.

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Category: Good Thinking, Lifestyle

Tags: Fraunhofer, Sports, Advertising, Broadcast, Television

Source: https://newatlas.com/good-thinking/fraunhofer-vibotec-sports-advertising/

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Scientists calculate life expectancy of Earth’s atmospheric oxygen

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An artist's interpretation of the atmosphere of Archean Earth, prior to 2.4 billion years ago. A new study suggests it may return to this oxygen-poor, methane-rich atmosphere in about 1 billion years' time

The Earth has an expiry date – in about five billion years, the Sun will expand and swallow up our home world. But it turns out life on Earth could have a much earlier end point. A new study has found that in about a billion years’ time, the atmosphere will lose most of its oxygen rapidly, which may have important implications in the search for life on other planets.

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Category: Environment, Science

Tags: Oxygen, Atmosphere, Earth, Geology, Exoplanet, Extraterrestrial

Source: https://newatlas.com/environment/earth-atmosphere-oxygen-life-expectancy/

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